1,1,1,2-Tetrachloroethane
West Harris County Municipal Utility District 15
1,1,1,2-Tetrachloroethane is a synthetic chemical used in metal degreasing and as an intermediate in industrial chemical production.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 2 | 0 | ND |
2015 | ND | 2 | 0 | ND |
2016 | ND | 2 | 0 | ND |
2017 | ND | 2 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 1 ppb
The EWG Health Guideline of 1 ppb for 1,1,1,2-tetrachloroethane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-12-22 | AC75661 | ND |
2014-12-22 | AC75659 | ND |
2015-08-04 | AD02361 | ND |
2015-08-04 | AD02357 | ND |
2016-02-01 | AD21063 | ND |
2016-02-01 | AD21097 | ND |
2017-01-24 | AD66468 | ND |
2017-03-21 | AD76063 | ND |
2018-03-05 | AE16632 | ND |
2018-03-05 | AE16636 | ND |
2019-01-28 | AE51688 | ND |
2019-04-23 | AE63390 | ND |